TRIS(HYDROXYMETHYL)AMINOMETHANE VOLUMETR

General description

Tris(hydroxymethyl)aminomethane is a volumetric standard manufactured under rigorous conditions and measured with the highest possible precision. Its mass fraction is determined by potentiometric titration, and it is qualified in a DIN EN ISO/IEC 17025 accredited laboratory.

Please visit ISO certificates and Site Quality Self-Assessments to access the current certificates of accreditation.

Download your certificate at http://www.sigma-aldrich.com to view certified values, including uncertainty and expiry date.

Application

It finds its use as a certified reference material (CRM) for the standardization of volumetric solutions in acidimetric titrations, according to USP and Ph. Eur.

Features and Benefits

• Available as a solid in a secure glass bottle to ensure its stability for the entire shelf life until opened.
• Certified reference material according to ISO 17034
• High-purity material traceable to NIST SRMs
• Qualified in a DIN EN ISO/IEC 17025 accredited laboratory
• In accordance with the chapter reagents of USP and Ph. Eur
• High-quality offering accurate titer determinations
• Accompanied by a certificate of analysis (CoA)

Packaging

SKU-pack size numbers ending with a "3" are SmartChemicals with an RFID tag on the label for seamless data transfer to the instrument, e.g. xxxxxx1003 or xxxxxxx 4003. More information on www.sigmaaldrich.com/SmartChemicals

Legal Information

CERTIPUR is a registered trademark of Merck KGaA, Darmstadt, Germany

Molecular Weight: 121.14. Empirical Formula: C₄H₁₁NO₃. linearFormula: NH₂C(CH₂OH)₃. Agency: ISO 17025, reag. Ph. Eur., reag. USP. Quality Level: 300. vapor pressure: 0.0267 hPa ( 20 °C). form: solid. potency: >. 5000 . mg/kg LD₅₀, oral (Rat), >. 5000 . mg/kg LD₅₀, skin (Rat). technique(s): titration: suitable. pH: 10.2-10.6 (20 . °C, 6 . g/L in H₂O). useful pH range: 7-9. pKa (25 °C): 8.1. bp: 219-220 . °C/10 . mmHg (lit.), 219-220 . °C/13.3 . hPa. mp: 167-172 . °C (lit.). solubility: 678 . g/L. density: 1.35 . g/cm³ . at 23 . °C. bulk density: 840 . kg/m³. storage temp.: 15-25°C. SMILES string: NC(CO)(CO)CO. InChI: 1S/C4H11NO3/c5-4(1-6,2-7)3-8/h6-8H,1-3,5H2. InChI key: LENZDBCJOHFCAS-UHFFFAOYSA-N. Storage Class Code: 11 - Combustible Solids. WGK: WGK 1. Flash Point(F): Not applicable. Flash Point(C): Not applicable.